fix: correct type names and restore cached variables

src/activities/reader/EpubReaderActivity.cpp

@@ -386,6 +386,8 @@ void EpubReaderActivity::loop() {
         [this](QuickMenuAction action) {
           // Cache values before exitActivity
           EpubReaderActivity* self = this;
+          GfxRenderer& cachedRenderer = renderer;
+          MappedInputManager& cachedMappedInput = mappedInput;
           const Section* cachedSection = section.get();
           SemaphoreHandle_t cachedMutex = renderingMutex;